file3.php

<?php

date_default_timezone_set ("Pacific/Auckland");
$url = 'https://wholesale.layer2.co.nz/api/login';
$content = array('username' => 'omnitech.b2b', 'password' => 'Omnit3ch1119');
$options = array(
	'http' => array(
		'header'  => "Content-type: application/x-www-form-urlencoded\r\n} ",
		'method'  => 'POST',
		'content' => http_build_query($content),
	),
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);
var_dump($response);

echo '<hr>';
$json = json_decode($response,true);
var_dump($json);

echo '<hr>';
if ($json['status'] == 1)
{
	$token = $json['data']['token'];
	echo $token;
} else
{
	echo "Invalid Username or Password";
}

echo '<hr><hr><hr>';

$fdate = '2015-10-01';
$tdate = '2015-10-02';
$url = "https://wholesale.layer2.co.nz/api/cdr/record?token=$token&from=$fdate&to=$tdate";

echo $url;

echo '<hr>';

$content = array('token' => $token, 'from' => $fdate, 'to' => $tdate);
$options = array(
'http' => array(
    'header'  => "Content-type: application/x-www-form-urlencoded\r\n} ",
    'method'  => 'GET',
    'content' => http_build_query($content),
    ),
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);

$json_a = json_decode($response, true);

if ($json_a['status'] == 1) {
    echo $response;
} else {
    echo "Invalid token";
}

?>

get_json_and_fetch_the_token.php

<?php
echo '<hr><h3>'.'Response from the server'.'</h3>';
$url = 'https://wholesale.layer2.co.nz/api/login';
$content = array('username' => 'omnitech.b2b', 'password' => 'Omnit3ch1119');
$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query($content),
    ),
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);
var_dump($response);

echo '<hr><h3>'.'Array converted from the response'.'</h3>';
$arr = json_decode($response, true);
var_dump($arr);

echo '<hr><h3>'.'Token from the array'.'</h3>';
$tok = $arr['data']['token'];
var_dump($tok);
echo $tok;
?>

how_to_get_token_from_wholesaleAPI.php

<?php
$url = 'https://wholesale.layer2.co.nz/api/login';
$content = array('username' => 'omnitech.b2b', 'password' => 'Omnit3ch1119');

$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query($content),
    ),
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);
echo $response;
?>

The running result for token fetching: